• 作者： 鄭森雄; 周照仁; 許鐘榮
• 作者服務機構： 國立臺灣海洋學院; 高雄海事專科學校水產製造科; 中央研究動物研究所
• 中文摘要： 高屏溪係本省第二大河，水質對高屏地區用水及河口魚類之生育極為重要。為知其水質，乃由民國65年9月至66年7月調查了水質6次；另由民國68年12月起至69年11月止共調查水質9次，並比較民國65～66年與三年後68～69年之水質。 由調查得知高屏溪河水之水溫在冬季為20℃左右（最低為16℃），在夏季為28℃左右（最高為33℃）。pH界於7.4與8.4之間。主與陰離子與陽離子與前人測定臺灣河川所得結果相近。在民國65～66年，高屏溪雖有部份河段受到輕度污染，但整體而言，河川尚屬乾淨。河水全年之COD皆在10 ppm以下，絕大多數河段之溶解氧高於6 ppm以上。河川各處皆有魚類，河口魚類在乾雨交接之際偶有浮頭、死亡現象。 在民國68～69年，高屏溪原先輕度污染河段已變為中度污染；下游之河段已接近嚴重污染，河水之COD最高達到72 ppm；許多河段之河水在乾季幾無氧氣。河口在初下大雨之次日，COD為41.8 ppm，溶解氧為1.1 ppm，魚類浮頭、死亡，由此前後五年之調查，可知高屏溪之污染已日趨嚴重，必須積極防治。
• 英文摘要： Kaoping river is the second largest river inTaiwan. This river is the source of drinkingwater. The estuary of the river is the habitatsfor many species of commercial fish. Waterqualities of the river were studied. From Sep-tember 1976 to July 1977, 6 investigations weremade, from December 1979 to November 1980,another 9 investigations were made. The waterqualities between 1976-1977 and 1979-1980 werecompared. It was found that the river watertemperature was around 20℃ in winter (lowest16℃), and around 28℃ in summer (highest33℃), pH was between 7.4 and 8.4. The maincation and anion were similar to those measuredby other investigator on rivers of Taiwan. In1976-1977, Kaoping river was clear in general,though some part of the river was slightlypolluted. The COD of the river water wasbelow 10 ppm during the whole year, and thedissolved oxygen in most parts of the river washigher than 6 ppm. Fish was abundant in theriver. In 1979-1980, the part of rive whichwas slightly polluted before, became moderatelypolluted. The lower part of the river washeavily polluted, in dry season, COD reachedto as high as 72 ppm, and the dissolved oxygenwas near zero. The estuary of the river wasmost polluted after first heavy rain, i. e. Aprilto May, many fish died at that time. It isknown that in the past 3 years, Kaoping riverhas been greatly deteriorated.
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